do you boil them to clean them or to heat the milk up? If your boiling them to clean them I would say your only have to boil brand new bottles after that soap and water should get the job done. If you are boiling the water to heat up the milk now would be a good time to wean him off of heated milk.

I did not use bottles, but anything new like a pacifier, got boiled when it was removed from the package. After that, i just ran them through the dishwasher. I have not checked the AAP site to see what the current standard is for sanitizing items.